320041220 has 12 divisors (see below), whose sum is σ = 672086604. Its totient is φ = 128016480.

The previous prime is 320041219. The next prime is 320041229. The reversal of 320041220 is 22140023.

320041220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 163891204 + 156150016 = 12802^2 + 12496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320041195 and 320041204.

It is not an unprimeable number, because it can be changed into a prime (320041229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8001011 + ... + 8001050.

It is an arithmetic number, because the mean of its divisors is an integer number (56007217).

Almost surely, 2^320041220 is an apocalyptic number.

It is an amenable number.

320041220 is an abundant number, since it is smaller than the sum of its proper divisors (352045384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320041220 is a wasteful number, since it uses less digits than its factorization.

320041220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16002070 (or 16002068 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 320041220 is about 17889.6959169238. The cubic root of 320041220 is about 684.0197462466.

Adding to 320041220 its reverse (22140023), we get a palindrome (342181243).

The spelling of 320041220 in words is "three hundred twenty million, forty-one thousand, two hundred twenty".